Shocker! The 2020 Toyota Supra B58 is underrated with Dynojet showing 339 rwhp and 427 lb-ft of torque at the wheels

Just kidding, this does not shock anybody except Car and Driver. BMW underrating their motors is nothing new and of course Toyota was not about to dial the B58 down lower than any B58 powered BMW models.

In our recent test, the 2020 Toyota Supra hurried from zero to 60 mph in 3.8 seconds and crushed the quarter-mile in 12.3 seconds at 113 mph. The fact that it outperforms more powerful coupes such as the BMW M2 Competition and nudges into the BMW M4's territory got us thinking: Might the Supra's BMW-sourced turbocharged 3.0-liter inline-six be underrated in a similar way to the twin-turbo V-8 in the BMW M5 Competition, which just tried to spin the wheels off the dyno?

Now, Car and Driver's hypocrisy and sudden dyno epiphany aside what is questionable is the claimed 427 lb-ft of torque at the wheels. Most B58's on a Dynojet will provide something in the ~370 lb-ft of torque range.

Did Toyota tune the torque up quite a bit? Why would they do that?

Well, this is something BimmerBoost can not verify as Car and Driver did not post the graph. We will have to wait and see some independent dyno runs posted in order to confirm.

Originally Posted by Car and Driver

After lashing down Toyota’s new sports car, we discovered that, even with the power-sapping driveline losses of its transmission and rear axle, the Supra puts down 339 horsepower and 427 lb-ft of torque at the wheels. That’s slightly better than the 335 horses Toyota said the car would produce at the crank and a considerable jump from the 365 lb-ft the company promised.